The graphic co



man was jigsaw fr.

IMPROVD BlShlDINGr MAGINE.

@In'.Sitlge'hnle referat in.' in tlgtstftltas ntcnttnt limiting auf nf llg'e sante.

To ALL WHOM 1T MAY CONCERN;v

Be it known that D. GIRD and W. K.YG IRD', of Cedar Lake, in the county of Herkimer, and State ot New York, have invented a new and improved Bending Machine; and we do hereby declare that the following is a full, clear, and exact description-thereof. l

Our invention consists in providing a machine bywhich wood, iron, or othermaterial may be forced into any desired shape. v v' I And to enable others skilled inthe art to make and use our invention, we willnow proceed to describe its construct-ionand operation, reference being had to the accompanying drawings, forming a part oi' this specifica tion, and to the letters of reference marked thereon. i

Figure 1 is a vertical elevation of one .end'ofthe machine showing the bending jaws closed- Figure 2 is a view of the same'end with the jaws open and ready for work. I

Figure is Aa sectional elevation through the line c of fig. 4.

Figure 4 is a side elevation.

i Similar lettersoi' reference indicate like parts. v

A isthe-platform or bed-plate upon which the other parts of the machine rest.

B B are two upright s'tandards,secured at the bottom tothe bed-plate A and standing a short distance apart, and connected at the top hy'a plate. The edges which face each other are straight and parallel, and cach has a guide strip or way on its edge, the two forming ways or a guide for cross-heads.

The lower portions of the' two uprights B B form a circle, they being wide at that point to'allow the jaws a ato be attached. These'jaws are segments of circles hung to the outerportion of the circle made by the uprights B B by pivots or bolts upon which they freely play.` The inner ends Vare halved, and when they are open, as in g. 2, they lap by cach other, vas seen in the drawing.

The-outer ends'are cut down on the outside 'to an edge, leaving thc `inner portion a circle or ga shape to correspond with shape of article bent. I

.There are two cross-heads which' play up and down on the'ways. They are placed at Aeach end of alvertical bar, 6,01 it may be said that the bar is widened at each end, the widened ends having grooves to it the ways, forming cross-heads! Near the centre of this bar a round disk, C, is attached. The circle o i` the disk C is about the same diameter as the inside of the jaws a ct.

C, being attached to the bar l, works up and down with Y-tlie bar, On the other or insideof this bar u. connecting-rod, D, is attached, a wrist-pin being made fast tothe upperend of thebar'for that purpose. The other end of'this connecting-rod is attached to the rim' oiia fly-wheel, E. 3

This ily-wheel is fitted to one end of a horizontal shaft, F.

It will be noticed that 'this ily-wheel has two slots its rimopposite' each other, c c'.

The shaft F is supported by stands, G Gnu-which are fast to the platform.

These stands have journal boxesand caps for the journals or bearings of the 'shaft secured tothem in thev usual way.

Near the'other end of the shaft F there is a spur-wheel, H.

. Attached to the stands there is another shaft, J,with a piniou,.7c, upon one end inside the bearing, and

a fast pulley, Z, and a loose pulley, m,upon it.' The belt drives 'the machine from the fast pulley l. Still lower' down there is a belt-shifter shaft, n, attached to the stands. This shaft 'has a fork on it to operate on thehelt.

As the shaft is moved backand forth the belt is moved from one pulley .to theother, either starting or stopping the machine. i ,Y

This shaft n is moved (cndwise only) bya lever, l), which works upon a fulcruin, p, attached to one of the uprigh'ts B, (near the top.)

This lever is operated by the rod r, which connects one ond with a bell-crank, s. "The other end of the bell-crank is attached to the beltlshifter shaft n.'

This shaft 1t is also operated upon by a spi-ing, z', which is continually drawing the shaft towards the rim of the ily-wheel E. i

The end of the'shaft bears constantly againstv the side of `the rim, except when it enters one or the other of the slots e ein the rim.

' Attached tothe bottom end of the bar b, whichA has the cross-heads upon its ends, and standing at right anglesl with the bar, there is a pin, o. This pin projects from the front or face of the'uprights B B, about the same as the jaws a a do, and of course moves up and down with the bar.

At the left hand, and attached'to the left-hand upright B, there is an arm, w, standing out horizontally, with along slot through it. In this slot, and arranged to slide back and forth, isa gauge-head, x, which can be fastened in the slot wherever desired. y v

When the jaws a a are closed around the disk C, as represented in iig. 1, the end of the small belt-shifter shaft n is in one of the slotsin the rim of the ily-wheel and the belt-is on the loose pulley m.

Now, to get the machine ready for bending, the attendant pulls down on the rod r, which, as before stated, operates upon -the bell-crank and upon the shifter-shaft n, drawing it endwise out of the slot in the ily-wheel,

.and at thelsame time shifting the belt on to the fast or driving pulley Z. 'This immediately `starts the machine through the pinion 7c and the spur-wheel H. The motion of the ily-wheel (by the connecting-rod D) throws up the bar b, and consequently the disk C. i The jaws a a, being hung loosely to the uprights B B, (their pivots being on a line drawn horizontally through the centre of the disk 0,) the upper ends are raised by the disk and parted, so as to allow the disk to rise up between the parted ends and above them. As the disk rises it leaves the ends ofv the jaws separated a distance as great as its own. diameter, and then ceases to operate upon them; but at this point the pin 'u'strikes the lower ends of the jaws, and they being locked or lapped past each other, it carries them up to the position represented in iig. 2. V

At this point the ily-wheel has made half a revolution, and the other slot in the rim is brought opposite the end of the shifter-shaft mand that being pressed against the rim, enters the slot at `the same moment that it shifts the belt on to the loose pulley, andthe machine is stopped short. l i Y The machine is now ready 'toreceive the article or substance to be bent. This piece y of wood, iron, or other material, is laid, as represented, horizontally'across the ends of the jaws a a, with the end of y against the gauge so, in order to bend the right portion.

TheVatte-ndant again pulls down the lever P by the rod A1', which both. disengages the end of the shaft qt from the slot in they-wheel and shifts the belt on to the driving pulley Z, at the same moment starting the machine, when the disk descends, forcing .down the piece y and the jaws a a at the same time, till the ily-wheel has made another half revolution, when the disk is raised, as shown in iig. 2. The piece y `is removed now in the form of a band, and the machine is ready for another operation. Y

It will be seen that the machine completes the bending process at every revolution of the ily-wheel.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

The disk C and the jaws a a, in combination with the cross-head bar @substantially as described.

We claim the belt-shifter n, in combination withI the slots e c in the ily-wheel and the disk C, substantially as and for the purpose herein s ct forth. i Y

The abone specification of our invention signed by us this 22d day oi August, 1866. v

E. D. G1R-U.,

W. K. GIR-D.

Witnesses: l v

J. TRIP?, Jr., W. BncKwrTU. 

